Illinois Route 23 (IL 23) is a north–south state highway in northern

Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolita ...

. It runs from

Illinois Route 116 Illinois Route 116 (IL 116) is a cross-state rural state highway that runs from U.S. Route 34 (US 34) by Gladstone east to the intersection of US 45 (North Front Street) and Old US 45, on the north side of Ashkum. Route description The w ...

Pontiac Pontiac may refer to: *Pontiac (automobile), a car brand *Pontiac (Ottawa leader) ( – 1769), a Native American war chief Places and jurisdictions Canada *Pontiac, Quebec, a municipality ** Apostolic Vicariate of Pontiac, now the Roman Catholic D ...

north to

U.S. Route 14 U.S. Route 14 (abbreviated U.S. 14 or US 14), an east–west route, is one of the original United States highways of 1926. It currently has a length of 1,398 miles (2,250 km), but it had a peak length of 1,429 miles (2,300 km). For ...

south of

Harvard Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher le ...

. This is a distance of . Illinois 23 was established in 1918 as one of the original 46 SBI routes. The routing of Illinois 23 has not changed since its establishment.

Route description

Illinois 23 is a major arterial route in rural central and north-central Illinois. It is a parallel to the

Interstate 39 Interstate 39 (I-39) is a highway in the Midwestern United States. I-39 runs from Normal, Illinois, at I-55 to State Trunk Highway 29 (WIS 29) in the town of Rib Mountain, Wisconsin, which is approximately south of Wausau. I- ...

U.S. Route 51 U.S. Route 51 or U.S. Highway 51 (US 51) is a major south-north United States highway that extends from the western suburbs of New Orleans, Louisiana, to within of the Wisconsin–Michigan state line. As most of the United States Numbered Highw ...

combination approximately 20 miles (32 km) to the west. The road starts near downtown

and runs as the main highway north, intersecting with

Interstate 55 Interstate 55 (I-55) is a major Interstate Highway in the central United States. As with most primary Interstates that end in a five, it is a major cross-country, north–south route, connecting the Gulf of Mexico to the Great Lakes. The h ...

and former

U.S. Route 66 U.S. Route 66 or U.S. Highway 66 (US 66 or Route 66) was one of the original highways in the United States Numbered Highway System. It was established on November 11, 1926, with road signs erected the following year. The h ...

. From this point, Illinois 23 continues as a 2-lane highway, turning west and running through

Cornell Cornell University is a private statutory land-grant research university based in Ithaca, New York. It is a member of the Ivy League. Founded in 1865 by Ezra Cornell and Andrew Dickson White, Cornell was founded with the intention to teach an ...

. After that, it turns back north to travel through the middle of

Streator Streator is a city in LaSalle County, Illinois, LaSalle and Livingston County, Illinois, Livingston counties in the U.S. state of Illinois. The city is situated on the Vermilion River (Illinois River tributary), Vermilion River approximately so ...

, where the route splits to follow two different one-way streets (Park Street and Bloomington Street). Route 23 continues through Grand Ridge to

Ottawa Ottawa (, ; Canadian French: ) is the capital city of Canada. It is located at the confluence of the Ottawa River and the Rideau River in the southern portion of the province of Ontario. Ottawa borders Gatineau, Quebec, and forms the core ...

, where the road follows 1st Ave and State street, to form a

concurrent Concurrent means happening at the same time. Concurrency, concurrent, or concurrence may refer to: Law * Concurrence, in jurisprudence, the need to prove both ''actus reus'' and ''mens rea'' * Concurring opinion (also called a "concurrence"), a ...

with

Illinois Route 71 Illinois Route 71 is a southwest-to-northeast state highway in north central Illinois. It runs from the end of Interstate 180 in Hennepin to U.S. Route 34 in Oswego. This is a distance of . Route description Outside of Hennepin, the road s ...

—Illinois 71 across the

Illinois River The Illinois River ( mia, Inoka Siipiiwi) is a principal tributary of the Mississippi River and is approximately long. Located in the U.S. state of Illinois, it has a drainage basin of . The Illinois River begins at the confluence of the D ...

. The highway once again splits into two one-way streets (Columbus and LaSalle Streets) through downtown Ottawa, until a block south of its junction with

U.S. Route 6 U.S. Route 6 (US 6), also called the Grand Army of the Republic Highway, honoring the American Civil War veterans association, is a main route of the U.S. Highway system. While it currently runs east-northeast from Bishop, California, to P ...

, where Illinois 71 departs toward the east. North of Ottawa, Illinois 23 has a full diamond interchange with

Interstate 80 Interstate 80 (I-80) is an east–west transcontinental freeway that crosses the United States from downtown San Francisco, California, to Teaneck, New Jersey, in the New York metropolitan area. The highway was designated in 1956 as one o ...

. Illinois 23 has two additional concurrencies with

U.S. Route 34 U.S. Route 34 (US 34) is an east–west United States highway that runs for from north-central Colorado to the western suburbs of Chicago. Through Rocky Mountain National Park it is known as the Trail Ridge Road where it reaches elevation ...

and

U.S. Route 52 U.S. Route 52 (US 52) is a major United States highway in the central United States that extends from the northern to southeastern region of the United States. Contrary to most other even-numbered U.S. Highways, US 52 primarily follows ...

, though no notable cities are present between Ottawa and

DeKalb DeKalb or De Kalb may refer to: People * Baron Johann de Kalb (1721–1780), major general in the American Revolutionary War Places Municipalities in the United States * DeKalb, Illinois, the largest city in the United States named DeKalb **DeKal ...

. Illinois 23 runs under Interstate 88 with no interchange, though access is available via Fairview Drive to two parallel roads with interchanges (Peace Road and Annie Glidden Road). Between DeKalb and

Sycamore Sycamore is a name which has been applied to several types of trees, but with somewhat similar leaf forms. The name derives from the ancient Greek ' (''sūkomoros'') meaning "fig-mulberry". Species of trees known as sycamore: * ''Acer pseudoplata ...

, Illinois 23 has four lanes. In Sycamore, Illinois 23 briefly overlaps

Illinois Route 64 Illinois Route 64 (IL 64, Illinois 64) is an east–west state highway in Northern Illinois. Its western terminus is at the Iowa state line, connecting with U.S. Route 52 (US 52) and Iowa Highway 64 via the Dale Gardner Veterans Memo ...

. After one final concurrency at

Illinois Route 72 Illinois Route 72 is an east–west state road in northern Illinois. It runs from the intersection with Illinois Route 73 north of Lanark east to Illinois Route 43 (Harlem Avenue) in Chicago. This is a distance of . Route description Illin ...

near

Genoa Genoa ( ; it, Genova ; lij, Zêna ). is the capital of the Italian region of Liguria and the List of cities in Italy, sixth-largest city in Italy. In 2015, 594,733 people lived within the city's administrative limits. As of the 2011 Italian ce ...

, Illinois 23 has an interchange with

Interstate 90 Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at . It begins in Seattle, Washington, and travels through the Pacific Northwest, Mountain West, Great Plains, Midwest, and ...

. It intersects

U.S. Route 20 U.S. Route 20 or U.S. Highway 20 (US 20) is an east–west United States Numbered Highway that stretches from the Pacific Northwest east to New England. The "0" in its route number indicates that US 20 is a major coast-to-coast route. S ...

and the western terminus of

Illinois Route 176 Illinois Route 176 (IL 176) is a east–west state route in northern Illinois. It runs from IL 23 (State Street) in Marengo to the southern terminus of IL 131 (Green Bay Road) in Lake Bluff. Route description IL 176 ...

in Marengo, and terminates south of Harvard at

Major intersections

Notes

* In downtown DeKalb, Route 23 (the main north–south street) intersects as 4th Street with

Illinois Route 38 Illinois Route 38 is an west–east state highway that runs across northern Illinois. It runs from U.S. Route 52 (US 52) in downtown Dixon to US 12/ US 20/ US 45 (Mannheim Road) in Westchester. It runs concurrently with ...

(the main east–west street) at a railroad crossing, as two

Union Pacific The Union Pacific Railroad , legally Union Pacific Railroad Company and often called simply Union Pacific, is a freight-hauling railroad that operates 8,300 locomotives over routes in 23 U.S. states west of Chicago and New Orleans. Union Paci ...

tracks pass through the crossing. Trains routinely bring traffic in DeKalb to a halt.

References

External links

{{ccat
Illinois Highway Ends: Illinois Route 23
023 DeKalb, Illinois Transportation in Livingston County, Illinois Transportation in LaSalle County, Illinois Transportation in DeKalb County, Illinois Transportation in McHenry County, Illinois